Improvement in cultivators



R, NELSON. CULTIVATOR.

` No. 3,406. Y Patented Jam, 15, 1844.

' |`bar and about two UNITED Sfr-.Atras PATENT OFFICE.'

'IMPROVEMENT IN CULTIYATORS.

Specifica-tion forming part of Letters Patent N0. 3,406, dated January15, 1844.

To all whom n may concern: Be it known that I, Renner NELSON, of

West Point, inthe county ofhTippecauoe and Iner atvpleasure, and to setand retain the plow in any position within halt' a circle by a leverwhich runs from said bars audtallsiulo'ntehes I'n a circular iron combattached to the han dies of said plows.

. To enable others skilled in the art to make andv use my invention, Iwill proceed to de- ,scribe its construction and operation.

M y plow is formed of the same material and lin any of the known formsot'- double or three shovel plows, consisting of center and outsidebeams, attached near the clevis by an iron fret back by another'ironbar'xof suitable dimensions, which is fastened through the center beam,but let loosely into the outside beams, so thatthey can bevtlrawn up orextend on it, as'reqn'ired.

For the purpose ot' contract-ing or expanding'the set ofthe plow, threeinches from the back partof each outside beam I insert perpendicularlyaniron rod, A A, ten inches long and three-fourths of an vinch thick, withsmall journalsattop and bottom ot'each bar, to which are attached `fourother bars, B B 'B B, of the same length and thickness, two above andtwo below, (let on with eyes and screwed dowrn) each bar running inwardat right angles to the center beam. Thron gh the center beamof said plowand in line with the bars last mentioned I insert a third revolving bar,c, one inch thick and seven inches long, secured at top andbot# tom ofsaid beam with screws or washers, so as to prevent play perpendicularly,and on journals on the top and bottom of said center bar I place 'andscrew down a hat bar, D, one and a quarter inch withl and one-quarterotan inch thick, (so placed as to leave .an equal distance on each sideofthe center bar aforesaid above and below-3) and tothe ends of this.flat bar, I unite with loose screws the four bars running Inward, asbefore described, from the outside .beam,'(the said llatbars containingtwo or more holes, as may be needed, so as to make the point otconnection nearer or more remote) thu`s-g1 ving a narrow or wide set to.the plow.

To the center of t he upper hat barmentioned I attach-a lever, E, bywhich l. can setthe.

plow at any point required in Vhalta circlef by slippingsaid lever intonotches into an iron comb, F, attached to the-handleot the plow.

What I claim as myiuvention, and desire to s cure by Letters Patent,is'-' The manner in whiehl have combined and arranged the `bars'B B B Band lever Eso as to ei'eetthe contraction and expansion of thecultivator, and in combination with the above the iron comb F.

In testimony whereof .lv have hereunto set my hand this 8th daj` ofAp|il,vl843t.

ROBERT NELSON. In presence of H.V W. ELLsWoRTH, M. H. WINTON.

